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From: Fam Zheng <famz@redhat.com>
To: qemu-devel@nongnu.org
Cc: kwolf@redhat.com, pbonzini@redhat.com, stefanha@redhat.com,
	qemu-block@nongnu.org
Subject: [Qemu-devel] [PATCH v5 00/12] block: Protect nested event loop with bdrv_drained_begin and bdrv_drained_end
Date: Wed, 21 Oct 2015 10:06:37 +0800	[thread overview]
Message-ID: <1445393209-26545-1-git-send-email-famz@redhat.com> (raw)

v5: Rebase onto Kevin's block tree.

v4: Rebase on to master so fix the "bdrv_move_feature_fields" issue.

v3: Call bdrv_drain unconditionally in bdrv_drained_begin.
    Document the internal I/O implications between bdrv_drain_begin and end.

The nested aio_poll()'s in block layer has a bug that new r/w requests from
ioeventfds and nbd exports are processed, which might break the caller's
semantics (qmp_transaction) or even pointers (bdrv_reopen).

Fam Zheng (12):
  aio: Add "is_external" flag for event handlers
  nbd: Mark fd handlers client type as "external"
  dataplane: Mark host notifiers' client type as "external"
  aio: introduce aio_{disable,enable}_external
  block: Introduce "drained begin/end" API
  block: Add "drained begin/end" for transactional external snapshot
  block: Add "drained begin/end" for transactional backup
  block: Add "drained begin/end" for transactional blockdev-backup
  block: Add "drained begin/end" for internal snapshot
  block: Introduce BlockDriver.bdrv_drain callback
  qed: Implement .bdrv_drain
  tests: Add test case for aio_disable_external

 aio-posix.c                     |  9 ++++-
 aio-win32.c                     |  8 +++-
 async.c                         |  3 +-
 block/curl.c                    | 14 ++++---
 block/io.c                      | 23 +++++++++++-
 block/iscsi.c                   |  9 ++---
 block/linux-aio.c               |  5 ++-
 block/nbd-client.c              | 10 +++--
 block/nfs.c                     | 17 ++++-----
 block/qed.c                     |  7 ++++
 block/sheepdog.c                | 38 ++++++++++++-------
 block/ssh.c                     |  5 ++-
 block/win32-aio.c               |  5 ++-
 blockdev.c                      | 37 ++++++++++++++++---
 hw/block/dataplane/virtio-blk.c |  5 ++-
 hw/scsi/virtio-scsi-dataplane.c | 22 +++++++----
 include/block/aio.h             | 39 ++++++++++++++++++++
 include/block/block.h           | 26 +++++++++++++
 include/block/block_int.h       |  8 ++++
 iohandler.c                     |  3 +-
 nbd.c                           |  4 +-
 tests/test-aio.c                | 82 ++++++++++++++++++++++++++++-------------
 22 files changed, 286 insertions(+), 93 deletions(-)

-- 
2.4.3

             reply	other threads:[~2015-10-21  2:07 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-21  2:06 Fam Zheng [this message]
2015-10-21  2:06 ` [Qemu-devel] [PATCH v5 01/12] aio: Add "is_external" flag for event handlers Fam Zheng
2015-10-21 15:21   ` [Qemu-devel] [Qemu-block] " Jeff Cody
2015-10-21  2:06 ` [Qemu-devel] [PATCH v5 02/12] nbd: Mark fd handlers client type as "external" Fam Zheng
2015-10-21 15:21   ` [Qemu-devel] [Qemu-block] " Jeff Cody
2015-10-21  2:06 ` [Qemu-devel] [PATCH v5 03/12] dataplane: Mark host notifiers' " Fam Zheng
2015-10-21  2:06 ` [Qemu-devel] [PATCH v5 04/12] aio: introduce aio_{disable, enable}_external Fam Zheng
2015-10-21 15:56   ` [Qemu-devel] [Qemu-block] " Jeff Cody
2015-10-22  2:11     ` Fam Zheng
2015-10-22  2:20       ` Jeff Cody
2015-10-21  2:06 ` [Qemu-devel] [PATCH v5 05/12] block: Introduce "drained begin/end" API Fam Zheng
2015-10-21 16:11   ` [Qemu-devel] [Qemu-block] " Jeff Cody
2015-10-22  2:20     ` Fam Zheng
2015-10-21  2:06 ` [Qemu-devel] [PATCH v5 06/12] block: Add "drained begin/end" for transactional external snapshot Fam Zheng
2015-10-21 17:18   ` [Qemu-devel] [Qemu-block] " Jeff Cody
2015-10-21  2:06 ` [Qemu-devel] [PATCH v5 07/12] block: Add "drained begin/end" for transactional backup Fam Zheng
2015-10-21 17:20   ` [Qemu-devel] [Qemu-block] " Jeff Cody
2015-10-21  2:06 ` [Qemu-devel] [PATCH v5 08/12] block: Add "drained begin/end" for transactional blockdev-backup Fam Zheng
2015-10-21 17:25   ` [Qemu-devel] [Qemu-block] " Jeff Cody
2015-10-21  2:06 ` [Qemu-devel] [PATCH v5 09/12] block: Add "drained begin/end" for internal snapshot Fam Zheng
2015-10-21 13:37   ` Kevin Wolf
2015-10-21 18:22   ` [Qemu-devel] [Qemu-block] " Jeff Cody
2015-10-21  2:06 ` [Qemu-devel] [PATCH v5 10/12] block: Introduce BlockDriver.bdrv_drain callback Fam Zheng
2015-10-21 18:25   ` [Qemu-devel] [Qemu-block] " Jeff Cody
2015-10-21  2:06 ` [Qemu-devel] [PATCH v5 11/12] qed: Implement .bdrv_drain Fam Zheng
2015-10-22  2:20   ` [Qemu-devel] [Qemu-block] " Jeff Cody
2015-10-22  2:59     ` Fam Zheng
2015-10-21  2:06 ` [Qemu-devel] [PATCH v5 12/12] tests: Add test case for aio_disable_external Fam Zheng
2015-10-21 13:40 ` [Qemu-devel] [PATCH v5 00/12] block: Protect nested event loop with bdrv_drained_begin and bdrv_drained_end Kevin Wolf

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